Siemens SIMATIC S7-300 Manual page 298

Troubleshooting
Table 11-7 Travel errors
Cl. No.
Travel errors
3 (03) 1 (01)
Software limit switch, beginning
Cause
Effect
Elimina-
tion
3 (03) 2 (02) Software limit switch, end
Cause
Effect
Elimina-
tion
Cl. = Detail event class, No. = Detail event number, CBS = checkback signals, DB = data block
Note: Value (xx) = Hexadecimal notation of the error number
11-18
Error message,
error analysis and elimination
Error response : "Feed STOP" see Table 11-2
Limit switch approached: in "Jog" operating mode, in "Automatic"
operating mode if G88/89, without switching
signal from the corresponding digital input.
The axis is located to the left of the software limit switch because of
actual value set.
Axis movement is stopped at the limit switch position.
Set actual value is not executed.
Following acknowledgment of the error, it is possible to tra-
verse to the working range.
Alter value of software limit switch (MD21)
Disable limit switch monitoring!
(With the limit switches (MD21/22) disabled, the travel range
limits are established by the maximum allowable values for
the limit switches).
Limit switch approached: in "Jog" operating mode, in "Automatic"
operating mode if G88/89, without switching
signal from the corresponding digital input.
The axis is located to the right of the software limit switch
because of actual value set.
Axis movement is stopped at the limit switch position.
Set actual value is not executed.
Following acknowledgment of the error, it is possible to tra-
verse to the working range.
Alter value of software limit switch (MD22)
Disable limit switch monitoring!
(With the limit switches (MD21/22) disabled, the travel range
limits are established by the maximum allowable values for
the limit switches).
Message/
Display
CBS
CBS
FM 354 Servo Drive Positioning Module